4001566801 has 8 divisors (see below), whose sum is σ = 4216212000. Its totient is φ = 3787325280.

The previous prime is 4001566783. The next prime is 4001566813. The reversal of 4001566801 is 1086651004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4001566801 - 2²³ = 3993178193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001566861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80455 + ... + 120316.

It is an arithmetic number, because the mean of its divisors is an integer number (527026500).

Almost surely, 2^4001566801 is an apocalyptic number.

It is an amenable number.

4001566801 is a deficient number, since it is larger than the sum of its proper divisors (214645199).

4001566801 is a wasteful number, since it uses less digits than its factorization.

4001566801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201839.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4001566801 is about 63257.9386401422. The cubic root of 4001566801 is about 1587.6082867089.

The spelling of 4001566801 in words is "four billion, one million, five hundred sixty-six thousand, eight hundred one".